Everything and anything. A word expressing a world not bound by meaning. Typically used in thought provoking conversations regarding philosophy and is often the only word in a sentence.
Person 1: "I personally think Plato's theory of forms is inadequate in its views of a changing society. How do you feel?"
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2million.